The invention relates to a cryolite separating arrangement, which comprises a tank for putting the cryolite and the liquid mixture material, wherein the top of the tank is equipped with the surface agitator for making the liquid surface rotate, the surface agitator is the bifurcation shape, the tank is also equipped with the hollow cryolite collecting pipe, the cryolite collecting port of the cryolite collecting pipe is at the central position of the liquid surface rotating, and the discharge port of the cryolite vents to the exterior of the tank. The invention makes the cryolite move to the liquid surface rotating center of the cryolite collecting port naturally with the cryolite buoyance and centripetal force produced by mixing the liquid surface and discharge by the cryolite collectingpipe (that is also the center or centripetal discharging cryolite method), which not only saves the energy and improves the separation efficient, but also reduces the loss of solute and is fit for the concentration industry production by freezing.